[compiler] No need to push literal index in VisitArrayLiteral.

src/full-codegen/arm/full-codegen-arm.cc

Index: src/full-codegen/arm/full-codegen-arm.cc
diff --git a/src/full-codegen/arm/full-codegen-arm.cc b/src/full-codegen/arm/full-codegen-arm.cc
index 3ab949fd35b1732f8156b6b23a273ba1f45e7f7b..683ae6e2d19e82446c8726c1525e41cd09ac0e54 100644
--- a/src/full-codegen/arm/full-codegen-arm.cc
+++ b/src/full-codegen/arm/full-codegen-arm.cc
@@ -1768,13 +1768,12 @@ void FullCodeGenerator::VisitArrayLiteral(ArrayLiteral* expr) {
 
     if (!result_saved) {
       __ push(r0);
-      __ Push(Smi::FromInt(expr->literal_index()));
       result_saved = true;
     }
     VisitForAccumulatorValue(subexpr);
 
     __ mov(StoreDescriptor::NameRegister(), Operand(Smi::FromInt(array_index)));
-    __ ldr(StoreDescriptor::ReceiverRegister(), MemOperand(sp, kPointerSize));
+    __ ldr(StoreDescriptor::ReceiverRegister(), MemOperand(sp, 0));
     EmitLoadStoreICSlot(expr->LiteralFeedbackSlot());
     Handle<Code> ic =
         CodeFactory::KeyedStoreIC(isolate(), language_mode()).code();
@@ -1789,7 +1788,6 @@ void FullCodeGenerator::VisitArrayLiteral(ArrayLiteral* expr) {
   // (inclusive) and these elements gets appended to the array. Note that the
   // number elements an iterable produces is unknown ahead of time.
   if (array_index < length && result_saved) {
-    __ pop();  // literal index
     __ Pop(r0);
     result_saved = false;
   }
@@ -1810,7 +1808,6 @@ void FullCodeGenerator::VisitArrayLiteral(ArrayLiteral* expr) {
   }
 
   if (result_saved) {
-    __ pop();  // literal index
     context()->PlugTOS();
   } else {
     context()->Plug(r0);